In case you need an excuse to have a cocktail on a Tuesday, National Rum Day is August 16th. In honor of rum, we’re mixing up a batch of this coffee cocktail. This recipe makes a pitcher and can be made in advance. Just combine the liqueur and rum (we used Kahlua and Sailor Jerry) with cold brewed coffee and store in a covered container in the fridge. When you’re ready to serve, add the cola, pour over ice, and spoon a little heavy cream over the top of each glass.